US2541901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pickling of aluminum
Assignee: Metalwash Machinery Co
•
Filing: 1944-10-26
•
Granted: 1951-02-13
•
Expires: 1964-10-26
Abstract
No abstract record available.
Inventors
- 👤 Erich R Zademach
- 👤 William W Clarke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:50
CPC Classifications
C; C23; C23G; C23G1/00; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19679
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1705944A
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US1355074A
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US1421055A
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US1572848A
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US1891549A
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US2235978A
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US2347742A
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US2359088A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-12 | 1954-08-14 | 1955-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-12 | 1958-08-14 | 1959-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-12 | 1962-08-14 | 1963-02-13 | $7700.00 | Window Closed / Lapsed |